Akademik

Старый волк знает толк
An old experienced man can conduct his affairs competently. See Старый конь борозды не портит (C)
Cf: The best wine comes out of an old vessel (Br.). The deuce (devil) knows many things because he is old (Br.). Good broth may be made in an old pot (Am., Br.). The old mule ploughs a straight furrow (Am.). An old ox makes (ploughs) a straight furrow (Br.). There's no head like an old head (Am.)

Русско-английский словарь пословиц и поговорок. . 2013.